How much does a Discord bot cost on Gemini 3.8 Flash?
Running a community Discord bot that answers questions and runs a couple of tool calls on Gemini 3.8 Flash costs about $679/month for 1,000 users × 10 tasks/day: that's $0.68 per user and $2.26 per 1,000 tasks.
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Assumptions
- 1,000 users × 10 tasks/day (300,000 per month)
- System prompt 500 tokens, user input 80, output 150 tokens
- Agent loop: 3 LLM calls per task, 1 tool call(s) per step at 300 tokens each; context is re-sent every step
- Prompt cache hit rate 60%
- Gemini 3.8 Flash list price: $0.825/1M input, $4.125/1M output, $0.0825/1M cached input; context window 1,048,576 tokens
How Gemini 3.8 Flash compares for a Discord bot
6 of 14 other popular models are cheaper for this workload. Cheapest isn't always best: check the quality index, and consider routing easy requests to a cheap model and only hard ones to a frontier model.
| Model | Quality | Monthly | Per user |
|---|---|---|---|
| DeepSeek V4 Flash 0423 | 24.4 | $75.84 | $0.076 |
| GPT-5 Nano | 13 | $79.34 | $0.079 |
| Gemini 2.5 Flash Lite | 10.4 | $98.37 | $0.098 |
| Claude Haiku 5.5 | 43.4 | $128 | $0.13 |
| Llama 4 Maverick | 9.3 | $201 | $0.20 |
| DeepSeek V4 Pro 0423 | 30.4 | $297 | $0.30 |
| Gemini 3.8 Flash | 40.9 | $679 | $0.68 |
| GPT-5.4 Mini | 24.1 | $988 | $0.99 |
| Grok 4.3 | 24.9 | $1,013 | $1.01 |
| Gemini 4 Argon | 52.6 | $1,622 | $1.62 |
| Grok 4.7 | 46.4 | $1,994 | $1.99 |
| GPT-6.1 Sol | 51.8 | $2,496 | $2.50 |
| Claude Sonnet 5.5 | 56 | $2,496 | $2.50 |
| Claude Opus 5.5 | 57.6 | $4,991 | $4.99 |
| GPT-5.5 | 38.4 | $6,584 | $6.58 |
More Gemini 3.8 Flash cost guides
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Prices: OpenRouter list prices (USD per 1M tokens), updated 2026-10-15. Estimates only; a month is 30 days. See how the math works.